Patents by Inventor Malcolm G. Guest

Malcolm G. Guest has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5087239
    Abstract: The ease of vaginal insertion experienced with round-edged petal-format tampon applicators can be achieved without the user comfort problems experienced in existing such application by a tampon applicator which has an expulsion end portion of unique structure. Thus, the invention provides an elongate hollow tampon holder shaped for vaginal insertion and having a tampon expulsion end portion and a plunger mounted in the holder and adapted to expel a tampon through the expulsion end portion from the holder interior. The expulsion end portion comprises a dome-shaped portion having an appreciable substantially central aperture therein and comprising a plurality of contiguous segments defined by a plurality of radial slits extending from said aperture through said dome-shaped portion to the base of the dome but no farther. In some embodiments, the expulsion end portion comprises a weakened region around the periphery of the tampon holder functioning as a preformed hinge.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: February 11, 1992
    Assignee: Tampax Limited
    Inventors: Alan L. Beastall, Malcolm G. Guest